Boring or penetrating the earth – Processes – Boring curved or redirected bores
Patent
1984-03-19
1985-05-28
Leppink, James A.
Boring or penetrating the earth
Processes
Boring curved or redirected bores
166 50, E21B 706
Patent
active
045194637
ABSTRACT:
A method for drilling a well in the earth for the production of minerals therefrom wherein a primary wellbore is first drilled into the earth, the primary wellbore being a deviated wellbore having a radius of curvature in the range of from about 2.5 to about 6 degrees per 100 feet of primary wellbore length, and then drilling from said primary wellbore at least one drainhole wellbore, said drainhole wellbore having a radius of curvature in the range of from about 0.2 to about 3 degrees per 1 foot of drainhole wellbore length.
REFERENCES:
patent: 2404341 (1946-07-01), Zublin
patent: 4194580 (1980-03-01), Messenger
patent: 4386665 (1983-06-01), Dellinger
"ARCO Drills Horizontal Drainhole for Better Reservoir Placement" by Moore III--Sep. 15, 1980.
Atlantic Richfield Company
Dang Hoang C.
Leppink James A.
MacDonald Roderick W.
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